FULLY BUFFERED NTSC
POST FILTER
AH844
The AH844 fully buffered NTSC post filter is a low cost post D-A filter designed to complement the
is simplified with high input and low output impedance op-amp buffer stages.
Filter Shape
Passband Shape
Sampling Frequency
Gain
End Of Passband
Passband Amplitude Ripple
Loss at 6.75 MHz wrt 4.4 MHz
Start Of Stopband
Stopband Attenuation wrt 4.4 MHz
Group Delay Ripple wrt 200 kHz
Delay Time at 200 kHz
Typical Current
Input Impedance
Aqueous Washable
Package
Lowpass
Sinx/x
14.318 MHz
- 0.2 dB + 0.2 dB
+5.8 dB + 0.2 dB
4.4 MHz
0.25 dB max
30 dB + 2 dB
7.0 MHz
40 dB min to 20 MHz
35 dB min to 50 MHz
+ 10.0 ns max to 4.3 MHz
340 ns + 10 ns
30 mA (15 mA per rail at + 5 v)
2 MΩ typical
Yes
DR00032A
with pin 6 open
with pin 6 gnd
© Faraday Technology. As part of continual product improvement the specifications, details and dimensions shown in this publication are subject to change
without notice
FARA024d
Page 1 of 2
Sep-05(B)
FARADAY [ FARADAY TECHNOLOGY ]
